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  • Security updates for Tuesday
  • EU updates smartphone secure development guideline

    The European Union Agency for Network and Information Security (ENISA) has published an updated version of its Smartphone Secure Development Guidelines. This document details the risks faced by developers of smartphone application, and provides ways to mitigate these.

  • CloudLinux 7 Users Get New Beta Linux Kernel Update That Addresses CVE-2017-6074

    CloudLinux's Mykola Naugolnyi announced today the availability of a new Beta kernel for the CloudLinux 7 operating system series, which patches a recently discovered and critical security flaw.

  • Linus Torvalds shrugged off warnings about 'insecure' SHA-1 in 2005

    LINUX FOUNDER Linus Torvalds was warned in 2005 that the use of the SHA-1 hash to sign code in Linux and Git was insecure and urged to shift to something better protected, but rejected the advice outright.

    Free software evangelist John Gilmore warned Torvalds ten years ago that "SHA1 has been broken; it's possible to generate two different blobs that hash to the same SHA1 hash".

    Gilmore penned his warning to Torvalds in April 2005, when MD5 had already been cracked and SHA1 remained "hard to crack" - but still crackable.

  • Subversion SHA1 Collision Problem Statement — Prevention and Remediation Options

    You probably saw the news last week that researchers at Google had found a scenario where they were able to break the SHA1 algorithm by creating two PDF files with differing content that produced the same hash. If you are following this story then you may have also seen that the Webkit Subversion repository had problems after a user committed these example files to their repository so that they could be used in test cases for SHA1 collisions.

  • making git-annex secure in the face of SHA1 collisions

    git-annex has never used SHA1 by default. But, there are concerns about SHA1 collisions being used to exploit git repositories in various ways. Since git-annex builds on top of git, it inherits its foundational SHA1 weaknesses. Or does it?

  • SSH Fingerprint Verification via Tor

    OpenSSH (really, are there any other implementations?) requires Trust on First Use for fingerprint verification.

    Verification can be especially problematic when using remote services like VPS or colocation.

    How can you trust that the initial connection isn’t being Man In The Middle’d?

  • Almost all Windows vulnerabilities are enabled by liberal 'admin rights'

    NEARLY OF THE VULNERABILITIES THAT AFFECT Microsoft's Windows operating system could be mitigated through a little careful control.

    Avecto, a security company, is the source of the latest revelation in this direction, and it says that 94 per cent of security problems could have been killed off if admin rights had been removed from the affected computer.

    This makes a lot of sense, since a computer that cannot be molested by a user cannot be molested by a third party. 94 per cent is just one example of the differences that can be made and Avecto says that in the case of Internet Explorer 100 per cent of risks are mitigated when rights are removed.

  • More on Bluetooth Ingenico Overlay Skimmers

    This blog has featured several stories about “overlay” card and PIN skimmers made to be placed atop Ingenico-brand card readers at store self-checkout lanes. I’m revisiting the topic again because a security technician at a U.S.-based retailer recently shared a few photos of several of these devices pulled from compromised card terminals, and the images and his story offer a fair bit more detail than in previous articles.

"Almost All Windows vulnerabilities are enabled by liberal admin

MS already has almost total control over the systems of Win10 users, now they just need a little more to make it "safe." I call BS.

"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
--Benjamin Franklin, 1759

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More in Tux Machines

GitLab Web IDE

  • GitLab Web IDE Goes GA and Open-Source in GitLab 10.7
    GitLab Web IDE, aimed to simplify the workflow of accepting merge requests, is generally available in GitLab 10.7, along with other features aimed to improve C++ and Go code security and improve Kubernets integration. The GitLab Web IDE was initially released as a beta in GitLab 10.4 Ultimate with the goal of streamlining the workflow to contribute small fixes and to resolve merge requests without requiring the developer to stash their changes and switch to a new branch locally, then back. This could be of particular interest to developers who have a significant number of PRs to review, as well as to developers starting their journey with Git.
  • GitLab open sources its Web IDE
    GitLab has announced its Web IDE is now generally available and open sourced as part of the GitLab 10.7 release. The Web IDE was first introduced in GitLab Ultimate 10.4. It is designed to enable developers to change multiple files, preview Markdown, review changes and commit directly within a browser. “At GitLab, we want everyone to be able to contribute, whether you are working on your first commit and getting familiar with git, or an experienced developer reviewing a stack of changes. Setting up a local development environment, or needing to stash changes and switch branches locally, can add friction to the development process,” Joshua Lambert, senior product manager of monitoring and distribution at GitLab, wrote in a post.

Record Terminal Activity For Ubuntu 16.04 LTS Server

At times system administrators and developers need to use many, complex and lengthy commands in order to perform a critical task. Most of the users will copy those commands and output generated by those respective commands in a text file for review or future reference. Of course, “history” feature of the shell will help you in getting the list of commands used in the past but it won’t help in getting the output generated for those commands. Read
more

Linux Kernel Maintainer Statistics

As part of preparing my last two talks at LCA on the kernel community, “Burning Down the Castle” and “Maintainers Don’t Scale”, I have looked into how the Kernel’s maintainer structure can be measured. One very interesting approach is looking at the pull request flows, for example done in the LWN article “How 4.4’s patches got to the mainline”. Note that in the linux kernel process, pull requests are only used to submit development from entire subsystems, not individual contributions. What I’m trying to work out here isn’t so much the overall patch flow, but focusing on how maintainers work, and how that’s different in different subsystems. Read more

Security: Updates, Trustjacking, Breach Detection

  • Security updates for Monday
  • iOS Trustjacking – A Dangerous New iOS Vulnerability
    An iPhone user's worst nightmare is to have someone gain persistent control over his/her device, including the ability to record and control all activity without even needing to be in the same room. In this blog post, we present a new vulnerability called “Trustjacking”, which allows an attacker to do exactly that. This vulnerability exploits an iOS feature called iTunes Wi-Fi sync, which allows a user to manage their iOS device without physically connecting it to their computer. A single tap by the iOS device owner when the two are connected to the same network allows an attacker to gain permanent control over the device. In addition, we will walk through past related vulnerabilities and show the changes that Apple has made in order to mitigate them, and why these are not enough to prevent similar attacks.
  • What Is ‘Trustjacking’? How This New iOS Vulnerability Allows Remote Hacking?
    This new vulnerability called trustjacking exploits a convenient WiFi feature, which allows iOS device owners to manage their devices and access data, even when they are not in the same location anymore.
  • Breach detection with Linux filesystem forensics
    Forensic analysis of a Linux disk image is often part of incident response to determine if a breach has occurred. Linux forensics is a different and fascinating world compared to Microsoft Windows forensics. In this article, I will analyze a disk image from a potentially compromised Linux system in order to determine the who, what, when, where, why, and how of the incident and create event and filesystem timelines. Finally, I will extract artifacts of interest from the disk image. In this tutorial, we will use some new tools and some old tools in creative, new ways to perform a forensic analysis of a disk image.